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Rustspecs13
Rustspecs13 New Reader
10/6/10 9:36 a.m.

High rpm + non steady throttle what?

Plus a lot of HP and thin air, plus above then I can see what your saying :P

~Alex

1988RedT2
1988RedT2 Reader
10/6/10 10:24 a.m.
Rustspecs13 wrote: They make turbo heat blankets for like $100, and if you want you can just make your self a heat shield with some thin aluminum, and a generic heat blanket, its not rocket science. Even plain header wrap works amazingly well. Stop over thinking this project and just go and do it! ~Alex

QFT!

Stop trying to re-invent the wheel and turbo the dang Honda already!

96DXCivic
96DXCivic SuperDork
10/6/10 10:41 a.m.

I am slowly gathering parts for my Honda turbo build. It is a D-series but here are prices I am looking at.

Manifold (second hand)-$55

Acura RDX injectors- $34 each

RDX injector adapters (http://www.xenocron.com/rdx-injectors-adapter-pack-p-481.html)- $36

TiAL 38mm wastegate- $200-$250 on ebay

Turbo and intercooler from a junkyard (not sure what yet) plus a turbo rebuild kit (around $100 for that)

Megasquirt or Hondata S300 (I am keeping my eye out for a good deal)

Oil cooler (also keeping my eye out for a good cheap one)

This is just a rough list and I know there is a lot of parts missing. But I figured I would give you a push.

FlightService
FlightService New Reader
10/6/10 12:01 p.m.

In reply to Rustspecs13:

LOL How long does one of those engines last?

Competition is one thing. Altitude is another, together it is bad.

I don't remember LaPlaz on the Formula D circuit this year.

cxhb
cxhb HalfDork
10/6/10 1:09 p.m.
Rustspecs13 wrote: High rpm + non steady throttle what? Plus a lot of HP and thin air, plus above then I can see what your saying :P ~Alex

La Paz is quite a bit higher than Japan.

I believe if you were going to try and drift at the same altitude as La Paz you would literally need to drift on top of Mt. Fuji, which while it would be cool, is not quite as probable.

ignorant
ignorant SuperDork
10/6/10 6:36 p.m.
FlightService wrote: In reply to cxhb: I believe ignorant is saying both. Because of the high elevation you need to spin the turbo extra fast to obtain the same boost (for power or for altitude compensation, HA got to use my new word.) Which is do-able given the proper exhaust temps, engine displacement and turbo selection. Then you have the issue of high rpm's in which vibration and loading conditions (read on the throttle off the throttle) causes a loading situation on moving components. High RPM + non steady throttle = explosively fantastic failures.

you also run into harmonic failure of the turbine vanes at the root, due to them not being designed to run at certain speeds, impact exhaust gas flow at certain speeds or just generally not being hefty enough for the application.

Generally its a mix between safety factor(for a vane off situation) and turbine wheel efficiency. If you start to make the vane root and vane thickness larger then you start to drop off efficiencies and move the turbine map around... (yes there are such things as turbine maps.) 1%-2% efficiency shifts are big deals with the current batches of engines(I'm talking diesels). With the advent of Urea, maybe I shouldn't say advent, just adoption... So. Adoption of urea the match required will open up a tick.

Sorry I geeked out.

unevolved
unevolved HalfDork
10/6/10 7:34 p.m.

Geeked out? E36 M3, that's fascinating.

FlightService
FlightService New Reader
10/7/10 7:01 p.m.

In reply to ignorant:

Are you referring to torsional vibration from the firing pulses or are you referring to the natural frequency of the turbine structure due to minuet balancing issues and the high RPM (I think we are on the same page based on my previous post.

I deal with alot of torsional issues at my job. Ever seen 180 hp engine snap a crankshaft due to transmission? Fun stuff.

Zeus
Zeus New Reader
10/12/10 4:15 a.m.

I've been fascinated by the remote turbocharger for some time now. I saw that one of the Spike TV weekend/automotive shows did on on a Ford F-150. On the research front I'd like to mount a turbo on the roof of a SUV. Ford Escape V6 was used on a Jaguar with forged pistons, etc. so the engine should be able to handle boost to some extent. ? Uh? Run the exhaust up one of the A-pillars to the turbine on the roof. Have a weather proof enclosure to house the air cleaner. Run the boosted down the other A-pillar. Oil feed and return could follow one of the tubes up to the turbo. Open the sunroof and listen to the WHINE as it spools up......... Going a more remote route would be to run the exhaust up the D-pillar and the boost down an A-pillar. Leave the stock exhaust entirely in place. Keep up the good work one and all!

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